Financial Instruments and Risk Management - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - Level 1 - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long-term debt	$ 1,576,993	$ 1,823,139
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current and long-term debt	$ 1,450,929	$ 1,668,216